CN105732008A - Co-firing method and application of laminated type zirconium oxide and aluminium oxide ceramic - Google Patents
Co-firing method and application of laminated type zirconium oxide and aluminium oxide ceramic Download PDFInfo
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Abstract
The invention discloses a co-firing method of laminated type zirconium oxide and aluminium oxide ceramic. The method includes the following steps of mixing zirconium-containing compound, yttrium-containing compound and solvent to conduct solvent thermal reaction, conducting calcining to obtain zirconium oxide and stable aluminium oxide powder, forming zirconium oxide ceramic biscuits, adding sintering aid to the multi-phase aluminium oxide powder to be mixed to form aluminium oxide ceramic biscuits, and conducting laminating, pressing and co-firing on the zirconium oxide ceramic biscuits and the aluminium oxide ceramic biscuits to prepare the laminated type zirconium oxide and aluminium oxide ceramic. The surface of the laminated type zirconium oxide and aluminium oxide ceramic obtained through the method is flat and free of warping, the ceramic has sufficient stability, reproducibility and the like, and the co-firing temperature is not higher than 1600 DEG C.
Description
Technical field
The invention belongs to technical field of functional ceramics, relate to co-burning method and the purposes of a kind of stacked zirconia alumina pottery.
Background technology
Zirconia ceramics and aluminium oxide ceramics are two kinds of potteries conventional in daily life, commercial production.Zirconia ceramics has the advantages such as oxygen-ion conduction is excellent, thermal conductivity is low, little, the stable chemical nature of Heat stability is good, high-temerature creep because of it, and is widely used in the high-tech automatic control system such as gas sensor, temperature sensor and high-temperature solid fuel battery electrolyte and the field such as hydromagnetic engine, unlubricated ball bearing.For ensureing that zirconia ceramics does not in use cause polymorphic transformation because using variations in temperature and ftractures, increase the ability of its oxygen-ion conduction simultaneously, usually introduce small amounts yttrium when ceramic preparation with stabilizing zirconia lattice.Aluminium oxide ceramics then has that dielectric loss is little, heat conductivity big, good insulating, mechanical strength are high, electrical property with performances such as temperature and Frequency scaling algorithm are relatively stable, be widely used as vacuum condenser ceramic substrate ceramic, various, semiconductor integrated circuit ceramic package shell and high-temperature insulation pottery.
In oxygen sensor used in vehicle field, generally use yttria-stabilized zirconia pottery as oxygen sensor sensing element, for ensureing that sensing element has the quick response electromotive force of higher oxygen and response speed faster, being necessary for making yttria-stabilized zirconia pottery have enough sintered densities, the sintering temperature of general zirconia ceramics reaches 1550-1650 DEG C.In oxygen sensor sensing element except carrying out using solid electrolyte of yttrium oxide stabilized zirconium oxide as oxygen ion conductor leading oxygen, metal platinum is also utilized as reaction electrode, reference electrode and to add thermode, generally the sintering temperature of platinum electrode is all below 1600 DEG C, and too high sintering temperature will cause that metal platinum makes electrode failure to the diffusion of periphery ceramic body.Meanwhile, for preventing from adding thermode for the generation interference of oxygen concentration potential signal, it is necessary to adding interpolation insulating layer material between thermode and yttria-stabilized zirconia pottery, this insulating layer material generally adopts aluminium oxide ceramics.And the sintering temperature of conventional aluminium oxide pottery generally up to 1800 DEG C～2200 DEG C, and be difficult to become finer and close after sintered density reaches 95%.Therefore, the chip oxygen sensor sensing element comprising yttria-stabilized zirconia ceramiic solid electrolyte layer, alumina ceramic insulating layer and platinum electrode to be prepared, it is necessary to realize zirconia ceramics at a relatively low sintering temperature and the stacked of aluminium oxide ceramics burns altogether.
Often there is warpage issues in stacked ceramic co-fired process.Function ceramics sheet warpage can reduce service life, is easier to cracking in follow-up use procedure.In prepared by chip oxygen sensor, warpage is that in common burning process, sintering shrinkage has big difference caused owing to yttria-stabilized zirconia ceramiic solid electrolyte layer differs relatively big with the sintering temperature of alumina ceramic insulating layer.Traditional mode at yttria-stabilized zirconia ceramic layer with aluminium oxide ceramics interlayer interpolation mixed transition layer can only obtain marginal sintering shrinkage, can not inherently reduce the sintering shrinkage having big difference between two-layer, there is very big limitation.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide the co-burning method of a kind of stacked zirconia alumina pottery, adopt the multi-layered ceramic substrate surface burnt altogether of the method smooth without warpage, there are enough stability and repeatability etc., co-fired temperature is not higher than 1600 DEG C.
It is a further object to provide a kind of above-mentioned stacked zirconia alumina pottery purposes in oxygen sensor.
For achieving the above object, the technical solution used in the present invention is as follows:
The co-burning method of a kind of stacked zirconia alumina pottery, comprises the following steps:
By zirconium-containing compound, carrying out solvent thermal reaction containing yttrium compound and solvent mixing, calcining obtains yttria-stabilized zirconia powder, is shaped to zirconia ceramics biscuit；
Heterogeneous oxidation aluminium powder body adds sintering aid, mixes and be shaped to aluminium oxide ceramics biscuit；
Zirconia ceramics biscuit prepares described stacked zirconia alumina pottery with aluminium oxide ceramics biscuit through lamination, lamination, altogether burning.
Described zirconium-containing compound is at least one in zirconium chloride, zirconium oxychloride, zirconium nitrate, zirconyl nitrate.
Described is at least one in Yttrium trinitrate, Yttrium chloride(Y2Cl6) containing yttrium compound.
Described solvent is at least one in methanol, ethanol, propanol.
The general reaction substrate concentration of described solvent thermal reaction is 0.2～1.4mol/L, and described general reaction thing includes zirconium-containing compound and containing yttrium compound, wherein: zirconium-containing compound is (85-97) with the mol ratio containing yttrium compound: (3-15).
The temperature of described solvent thermal reaction is 100～160 DEG C, and the response time is 18～24h.
The temperature of described calcining is 600-900 DEG C, and the response time is 2～3h, and the granularity controlling yttria-stabilized zirconia powder is 8-700nm.
Described heterogeneous oxidation aluminium powder body includes Alpha-alumina and gama-alumina, and wherein: in heterogeneous oxidation aluminium powder body, the mass percent of Alpha-alumina is 25～100%, the mass percent of gama-alumina is 0～75%.
The quality of described sintering aid is the 0.2～5% of heterogeneous oxidation aluminium powder weight.
Described sintering aid is at least one in aluminium oxide, silicon oxide, magnesium oxide, calcium oxide.
The described temperature burnt altogether is 1400～1600 DEG C, and the time of burning altogether is 2～3h.
In described stacked zirconia alumina pottery, the zirconia ceramics resistivity when 500 DEG C is 10.01～49.63 Ω m, and the aluminium oxide ceramics resistivity when 500 DEG C is (1.64～4.74) × 104Ω·m。
A kind of above-mentioned stacked zirconia alumina pottery purposes in oxygen sensor.
Owing to adopting technique scheme, the present invention has the following advantages and beneficial effect:
The present invention method gained stacked zirconia alumina pottery surface smooth without warpage, there are enough stability and repeatability etc., co-fired temperature is not higher than 1600 DEG C.
In the present invention, first pass through solvent thermal reaction temperature with reactant concentration to regulate and control yttria-stabilized zirconia powder granularity, yttria-stabilized zirconia pottery is made to be able to dense sintering at a lower temperature, and then to the alumina powder jointed appropriate sintering aid of middle interpolation so that the sintering temperature of the sintering temperature of aluminium oxide ceramics and yttria-stabilized zirconia pottery matches, regulated and controled by the ratio of alumina powder jointed middle α and γ phase simultaneously, make the sintering shrinkage of aluminium oxide ceramics base substrate and the sintering shrinkage of yttria-stabilized zirconia ceramic body match.The sintering shrinkage of aluminium oxide ceramics base substrate freely can regulate and control in 11.1～20.6% scopes so that the co-fired temperature of zirconia alumina pottery can as needed in flexible modulation within the scope of 1400～1600 DEG C.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further detailed explanation.
In the sensing element of chip oxygen sensor used in vehicle, generally using yttria-stabilized zirconia ceramiic solid electrolyte as oxygen ion conductor, for preventing the electric current of heating rod from the quick voltage signal of oxygen being impacted, it is necessary to adding thermode add aluminium oxide ceramics middle with solid electrolyte as insulating barrier.Yttria-stabilized zirconia pottery differs very many with the sintering characteristic of aluminium oxide ceramics, and needs common burning in preparation process, and burning mode altogether can be addressed by the inventive method.
The present invention by controlling its granularity to regulate the sintering temperature of zirconia ceramics in synthesis yttria-stabilized zirconia powder process, simultaneously by controlling material powder granularity introduce sintering aid to regulate the sintering temperature of aluminium oxide ceramics in Alumina Ceramics Sintering process so that yttria-stabilized zirconia pottery and aluminium oxide ceramics can at 1600 DEG C and following have identical sintering range.The phase composition then passing through adjustment alumina powder jointed is consistent with yttria-stabilized zirconia ceramic phase to realize aluminium oxide ceramics sintering shrinkage in common burning process, and then realizes the common burning of the stacked pottery of zirconia alumina.
There are some researches show, the granularity of powder body is very big on the impact of sintering temperature, and the more little then sintering temperature of granularity is more low.And the sintering temperature of yttria-stabilized zirconia powder is typically in more than 1550 DEG C, alumina powder jointed sintering temperature is then higher than 1800 DEG C.In prepared by chip oxygen sensor, for making yttria-stabilized zirconia pottery be capable of common burning with aluminium oxide ceramics, first it is will below the most high sintering temperature that metal foil electrodes can bear, by reducing the particle mean size of oxidized yttrium stable zirconium oxide powder body, while reducing zirconia ceramics sintering temperature, ensure its relatively low high-temperature resistivity and enough oxygen ionic conductivities.Simultaneously by selecting the alumina powder jointed for raw material of nanoscale, and suitably use to obtain the sintering temperature identical with zirconia ceramics by sintering aid, and ensure its enough densified sintering product, intensity and insulating properties.
Therefore, in adopting the oxidized yttrium stable zirconium oxide powder process of solvent structure, regulate reaction temperature 100～160 DEG C, it is 0.2～1.4mol/L that adjustment comprises zirconium-containing compound with the general reaction substrate concentration containing yttrium compound, wherein zirconium-containing compound is (85-97) with the mol ratio containing yttrium compound: (3-15), the precursor powder obtained can obtain particle mean size various sizes of yttria-stabilized zirconia powder in 8～700nm after high-temperature calcination.The yttria-stabilized zirconia ceramic sintering temperature that the method prepares is at 1400～1600 DEG C, and when 500 DEG C, testing conductivity is at 10.01～49.63 Ω m.In actual application, above-mentioned yttria-stabilized zirconia powder utilizes the tape casting or dry pressure formed for biscuit of ceramics, then is sintered.
In the process of Borolon powder body, finding only by the granularity reducing powder body not enough so that alumina powder jointed sintering temperature is down to less than 1600 DEG C, therefore the present invention regulates the sintering temperature of aluminium oxide by mixing the mode of sintering aid in nanometer alumina powder.Particle mean size is thermally treated resulting in Alpha-alumina and gama-alumina powder body at 800 DEG C with 1200 DEG C of temperature respectively less than the alumina powder jointed of 50nm, introduces the one or more of which sintering aid of calcium oxide, magnesium oxide, silicon oxide simultaneously when Alumina Ceramics Sintering；When yttria-stabilized zirconia powder granularity is when 8～50nm, in aluminium oxide ceramics, sintering aid introduces total amount 5～4%；When yttria-stabilized zirconia powder granularity is when 50nm～500nm, in aluminium oxide ceramics, sintering aid introduces total amount 4～2%；When yttria-stabilized zirconia powder granularity is when 500nm～700nm, in aluminium oxide ceramics, sintering aid introduces total amount 2～0.2%.In actual application, above-mentioned alumina powder jointed after adding appropriate sintering aid mix homogeneously, recycling the tape casting or dry pressure formed for biscuit of ceramics, and be sintered.
After reducing the sintering temperature of aluminium oxide ceramics, it is necessary to adjust its sintering shrinkage further and make it close with the yttria-stabilized zirconia pottery sintering shrinkage when common burning.As the zirconic sintering shrinkage of stabilized with yttrium oxide is up to 18.76% when 1500 DEG C, Alpha-alumina is 13.48%, and gama-alumina is 18.98%.The high sintering shrinkage of gama-alumina is owing in sintering process, gama-alumina is transformed into Alpha-alumina and can cause the volume contraction of extra 14%.But the sintering character of gama-alumina is poor, although sintering shrinkage is high but sintered density is low, it is impossible to individually sinter use.The present invention adopts the method carrying out according to a certain percentage with gama-alumina powder body mixing by the Alpha-alumina mixing sintering aid to regulate its sintering shrinkage；When aluminium oxide ceramics base substrate contains respectively Alpha-alumina that molar content is 25～70%, 30～75% gama-alumina time, the co-fired temperature of the stacked pottery of zirconia alumina is 1400～1500 DEG C；Aluminium oxide ceramics base substrate contains respectively Alpha-alumina that molar content is 70～100%, 0～30% gama-alumina time, the co-fired temperature of the stacked pottery of zirconia alumina is at 1500～1600 DEG C.
Embodiment 1
Data according to table 1, weigh 1.3g zirconium chloride, 0.2g Yttrium trinitrate and 30mL ethanol, general reaction thing (includes zirconium chloride and Yttrium trinitrate), and concentration is 0.2mol/L, it is placed in high-pressure bottle, 18h is reacted at the temperature of 100 DEG C, the presoma generated after reaction calcines 3h through 700 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 500nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 4.31g Alpha-alumina less than 50nm and 0.59g gama-alumina powder body, and add 0.1g silicon oxide as sintering aid, wherein Alpha-alumina is 88:12 with the mass ratio of gama-alumina, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1600 DEG C and burns 2h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 22.19 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 3.52 × 104Ω·m。
Embodiment 2
Data according to table 1, weigh 1.93g zirconium oxychloride, 0.4g Yttrium trinitrate and 30mL methanol, general reaction thing (includes zirconium oxychloride and Yttrium trinitrate), and concentration is 0.2mol/L, it is placed in high-pressure bottle, 20h is reacted at the temperature of 160 DEG C, the presoma generated after reaction calcines 3h through 600 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 700nm, and flow casting molding is zirconia ceramics biscuit.
Weighing the particle mean size 5.0g alpha-alumina powder less than 50nm, and add 0.01g magnesium oxide as sintering aid, after mixing, flow casting molding is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1600 DEG C and burns 2h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 35.66 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 1.64 × 104Ω·m。
Embodiment 3
Data according to table 1, weigh 5.15g zirconyl nitrate, 0.8g Yttrium trinitrate and 30mL propanol, general reaction thing (includes zirconyl nitrate and Yttrium trinitrate), and concentration is 0.8mol/L, it is placed in high-pressure bottle, 24h is reacted at the temperature of 160 DEG C, the presoma generated after reaction calcines 2h through 800 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 590nm, and flow casting molding is zirconia ceramics biscuit.
Weigh the particle mean size 3.46g Alpha-alumina less than 50nm and 1.49g gama-alumina powder body, and add 0.02g magnesium oxide, 0.04g silicon oxide as sintering aid, wherein Alpha-alumina is 70:30 with the mass ratio of gama-alumina, and after mixing, flow casting molding is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1600 DEG C and burns 3h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 27.36 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 4.06 × 104Ω·m。
Embodiment 4
Data according to table 1, weigh 5.8g zirconium oxychloride, 1.2g Yttrium trinitrate and 30mL ethanol, general reaction thing (includes zirconium oxychloride and Yttrium trinitrate), and concentration is 0.7mol/L, it is placed in high-pressure bottle, 22h is reacted at the temperature of 160 DEG C, the presoma generated after reaction calcines 2h through 900 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 450nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 2.72g Alpha-alumina less than 50nm and 2.13g gama-alumina powder body, and add 0.02g calcium oxide, 0.13g silicon oxide as sintering aid, wherein Alpha-alumina is 56:44 with the mass ratio of gama-alumina, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1500 DEG C and burns 3h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 47.03 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 3.15 × 104Ω·m。
Embodiment 5
Data according to table 1, weigh 5.59g zirconium chloride, 0.5g Yttrium chloride(Y2Cl6) and 30mL ethanol, general reaction thing (includes zirconium chloride and Yttrium chloride(Y2Cl6)), and concentration is 0.9mol/L, it is placed in high-pressure bottle, 20h is reacted at the temperature of 100 DEG C, the presoma generated after reaction calcines 2h through 700 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 150nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 2.64g Alpha-alumina less than 50nm and 2.16g gama-alumina powder body, and add 0.09g calcium oxide, 0.11g magnesium oxide as sintering aid, wherein Alpha-alumina is 55:45 with the mass ratio of gama-alumina, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1500 DEG C and burns 3h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 21.98 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 4.01 × 104Ω·m。
Embodiment 6
Data according to table 1, weigh 5.15g zirconium nitrate, 0.08g Yttrium chloride(Y2Cl6) and 30mL propanol, general reaction thing (includes zirconium nitrate and Yttrium chloride(Y2Cl6)), and concentration is 0.4mol/L, it is placed in high-pressure bottle, 18h is reacted at the temperature of 140 DEG C, the presoma generated after reaction calcines 3h through 600 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 490nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 2.84g Alpha-alumina less than 50nm and 2.06g gama-alumina powder body, and add 0.01g calcium oxide, 0.02g magnesium oxide, 0.08g silicon oxide as sintering aid, wherein Alpha-alumina is 58:42 with the mass ratio of gama-alumina, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1500 DEG C and burns 2h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 49.63 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 3.77 × 104Ω·m。
Table 1
Embodiment 7
Data according to table 2, weigh 8.53g zirconium oxychloride, 0.82g Yttrium chloride(Y2Cl6) and 30mL methanol, general reaction thing (includes zirconium oxychloride and Yttrium chloride(Y2Cl6)), and concentration is 1.0mol/L, it is placed in high-pressure bottle, 18h is reacted at the temperature of 160 DEG C, the presoma generated after reaction calcines 3h through 800 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 400nm, and flow casting molding is zirconia ceramics biscuit.
Weighing the particle mean size 2.99g Alpha-alumina less than 50nm and 1.91g gama-alumina powder body, and add 0.1g magnesium oxide as sintering aid, wherein Alpha-alumina is 61:39 with the mass ratio of gama-alumina, and after mixing, flow casting molding is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1500 DEG C and burns 2h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 42.73 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 3.82 × 104Ω·m。
Embodiment 8
Data according to table 2, weigh 5.2 zirconyl nitrates, 0.4g Yttrium chloride(Y2Cl6) and 30mL propanol, general reaction thing (includes zirconyl nitrate and Yttrium chloride(Y2Cl6)), and concentration is 0.8mol/L, it is placed in high-pressure bottle, 24h is reacted at the temperature of 120 DEG C, the presoma generated after reaction calcines 3h through 600 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 370nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 3.33g Alpha-alumina less than 50nm and 1.57g gama-alumina powder body, and add 0.1g calcium oxide as sintering aid, wherein Alpha-alumina is 68:32 with the mass ratio of gama-alumina, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1500 DEG C and burns 3h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 37.72 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 3.96 × 104Ω·m。
Embodiment 9
Data according to table 2, weigh 7g zirconium chloride, 2g Yttrium trinitrate and 30mL ethanol, general reaction thing (includes zirconium chloride and Yttrium trinitrate), and concentration is 1.2mol/L, it is placed in high-pressure bottle, 22h is reacted at the temperature of 140 DEG C, the presoma generated after reaction calcines 3h through 700 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 30nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 3.22g Alpha-alumina less than 50nm and 1.58g gama-alumina powder body, and add 0.2g silicon oxide as sintering aid, wherein Alpha-alumina and gama-alumina mass ratio are 67:33, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1500 DEG C and burns 2h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 13.66 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 4.13 × 104Ω·m。
Embodiment 10
Data according to table 2, weigh 5.8g zirconium oxychloride, 0.6g Yttrium chloride(Y2Cl6) and 30mL propanol, general reaction thing (includes zirconium oxychloride and Yttrium chloride(Y2Cl6)), and concentration is 0.7mol/L, it is placed in high-pressure bottle, 24h is reacted at the temperature of 120 DEG C, the presoma generated after reaction calcines 2h through 800 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 250nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 3.06g Alpha-alumina less than 50nm and 1.79g gama-alumina powder body, and add 0.06g calcium oxide, 0.02g magnesium oxide, 0.08g silicon oxide as sintering aid, wherein Alpha-alumina is 63:37 with the mass ratio of gama-alumina, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1500 DEG C and burns 3h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 10.01 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 4.74 × 104Ω·m。
Embodiment 11
Data according to table 2, weigh 8.7g zirconium chloride, 1.8g Yttrium trinitrate and 30mL ethanol, general reaction thing (includes zirconium chloride and Yttrium trinitrate), and concentration is 1.4mol/L, it is placed in high-pressure bottle, 22h is reacted at the temperature of 120 DEG C, the presoma generated after reaction calcines 2h through 900 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 8nm, and flow casting molding is zirconia ceramics biscuit.
Weigh the particle mean size 1.2g Alpha-alumina less than 50nm and 3.6g gama-alumina powder body, and add 0.06g calcium oxide, 0.03g magnesium oxide, 0.11g silicon oxide as sintering aid, wherein Alpha-alumina is 25:75 with the mass ratio of gama-alumina, and after mixing, flow casting molding is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1400 DEG C and burns 3h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 11.52 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 3.21 × 104Ω·m。
Embodiment 12
Data according to table 2, weigh 8.33g zirconium chloride, 2.40g Yttrium trinitrate and 30mL ethanol, general reaction thing (includes zirconium chloride and Yttrium trinitrate), and concentration is 1.4mol/L, it is placed in high-pressure bottle, 24h is reacted at the temperature of 100 DEG C, the presoma generated after reaction calcines 3h through 800 DEG C, obtains the yttria-stabilized zirconia powder that particle mean size is 25nm, and extrusion forming is zirconia ceramics biscuit under the pressure of 6MPa.
Weigh the particle mean size 1.81g Alpha-alumina less than 50nm and 2.99g gama-alumina powder body, and add 0.05g calcium oxide, 0.04g magnesium oxide, 0.15g silicon oxide as sintering aid, wherein Alpha-alumina is 38:62 with the mass ratio of gama-alumina, and after mixing, under the pressure of 6MPa, extrusion forming is aluminium oxide ceramics biscuit.
Zirconia ceramics biscuit and aluminium oxide ceramics biscuit are through lamination, lamination, it is placed at the temperature of 1400 DEG C and burns 3h altogether, obtaining stacked zirconia alumina pottery, wherein: the zirconia ceramics resistivity when 500 DEG C is 20.01 Ω m, the aluminium oxide ceramics resistivity when 500 DEG C is 3.53 × 104Ω·m。
Table 2
The above-mentioned description to embodiment is to be understood that for ease of those skilled in the art and apply the present invention.These embodiments obviously easily can be made various amendment by person skilled in the art, and General Principle described herein is applied in other embodiments without through performing creative labour.Therefore, the invention is not restricted to embodiment here, those skilled in the art's announcement according to the present invention, the improvement made without departing from scope and amendment all should within protection scope of the present invention.
Claims (10)
1. the co-burning method of a stacked zirconia alumina pottery, it is characterised in that: comprise the following steps:
By zirconium-containing compound, carrying out solvent thermal reaction containing yttrium compound and solvent mixing, calcining obtains yttria-stabilized zirconia powder, is shaped to zirconia ceramics biscuit；
Heterogeneous oxidation aluminium powder body adds sintering aid, mixes and be shaped to aluminium oxide ceramics biscuit；
Zirconia ceramics biscuit prepares described stacked zirconia alumina pottery with aluminium oxide ceramics biscuit through lamination, lamination, altogether burning.
2. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterised in that: described zirconium-containing compound is at least one in zirconium chloride, zirconium oxychloride, zirconium nitrate, zirconyl nitrate.
3. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterised in that: described is at least one in Yttrium trinitrate, Yttrium chloride(Y2Cl6) containing yttrium compound.
4. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterised in that: described solvent is at least one in methanol, ethanol, propanol.
5. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterized in that: the general reaction substrate concentration of described solvent thermal reaction is 0.2～1.4mol/L, described general reaction thing includes zirconium-containing compound and containing yttrium compound, wherein: zirconium-containing compound is (85-97) with the mol ratio containing yttrium compound: (3-15).
6. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterised in that: the temperature of described solvent thermal reaction is 100～160 DEG C, and the response time is 18～24h.
7. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterised in that: the temperature of described calcining is 600-900 DEG C, and the response time is 2～3h, and the granularity controlling yttria-stabilized zirconia powder is 8-700nm.
8. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterized in that: described heterogeneous oxidation aluminium powder body includes Alpha-alumina and gama-alumina, wherein: in heterogeneous oxidation aluminium powder body, the mass percent of Alpha-alumina is 25～100%, the mass percent of gama-alumina is 0～75%.
9. the co-burning method of stacked zirconia alumina according to claim 1 pottery, it is characterised in that: the quality of described sintering aid is the 0.2～5% of heterogeneous oxidation aluminium powder weight；
Preferably, described sintering aid is at least one in aluminium oxide, silicon oxide, magnesium oxide, calcium oxide；
Preferably, the described temperature burnt altogether is 1400～1600 DEG C, and the time of burning altogether is 2～3h；
Preferably, in described stacked zirconia alumina pottery, the zirconia ceramics resistivity when 500 DEG C is 10.01～49.63 Ω m, and the aluminium oxide ceramics resistivity when 500 DEG C is (1.64～4.74) × 104Ω·m。
10. the ceramic purposes in oxygen sensor of stacked zirconia alumina that prepared by the arbitrary described method of claim 1 to 9.
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| CN107555803A (en) * | 2017-09-19 | 2018-01-09 | 广东风华高新科技股份有限公司 | A kind of glass powder, its preparation method and application |
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| CN108793979A (en) * | 2018-07-12 | 2018-11-13 | 李磊 | A kind of preparation method of medical instrument ceramics |
| CN110330317A (en) * | 2019-07-23 | 2019-10-15 | 南充三环电子有限公司 | A kind of zirconium oxide compound alumina ceramic sintered body, preparation method and application |
| CN111362692A (en) * | 2020-04-15 | 2020-07-03 | 常州联德电子有限公司 | High-strength multilayer ceramic co-fired structure and preparation method thereof |
| CN112010648A (en) * | 2020-09-11 | 2020-12-01 | 东莞理工学院 | Preparation method of high-density zirconia ceramic |
| CN114988854A (en) * | 2022-07-19 | 2022-09-02 | 华中科技大学 | Alumina ceramic substrate and preparation method thereof |
| CN114988854B (en) * | 2022-07-19 | 2023-06-16 | 华中科技大学 | Alumina ceramic substrate and preparation method thereof |
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